Xerox Corporation

Hewlett-packard Development Company, L.p.

3d Systems, Inc.

Patricia A Wang

Alexey S Kabalnov

Bo Wu

Jule W Thomas, Jr

Trevor James Snyder

Charles G Dupuy

Pingyong Xu

Michael B Meinhardt

Chad David Freitag

John Wai Fong

Randall Ray Bridgeman

Tony Russell Rogers

Bhaskar T Ramakrishnan

Paul Tyrell

Pratima G N Rao

Donald R Titterington

Christopher Auguste Dirubio

Zia Ur Rehman

Mary E Austin

Luanne J Rolly

Marlene Ann McGorrin

William C Dean

Mark Harris Tennant

Don Titterington

Naomi Oak

Jeffrey C Shelton

Mark H Tennant

Jule W Thomas Jr

In one aspect, inks for use with a three-dimensional printing system are described herein. In some embodiments, an ink described herein comprises up to about 90 wt. % monofunctional curable material, up to about 10 wt. % difunctional curable material, and up to about 10 wt. % liquid rubber, based on the total weight of the ink, wherein the liquid rubber comprises one or more curable moieties. In some cases, the liquid rubber comprises one or more ethylenically unsaturated moieties. For example, in some instances, the liquid rubber comprises a butadiene acrylonitrile copolymer.

Inks comprising liquid rubber for 3D printing

In one aspect, inks for use with a three-dimensional printing system are described herein. In some embodiments, an ink described herein comprises up to about 90 wt. % monofunctional curable material, up to about 10 wt. % difunctional curable material, and up to about 10 wt. % liquid rubber, based on the total weight of the ink, wherein the liquid rubber comprises one or more curable moieties. In some cases, the liquid rubber comprises one or more ethyleneically unsaturated moieties. For example, in some instances, the liquid rubber comprises a butadiene acrylonitrile copolymer.

In one aspect, inks for use with a three-dimensional printing system are described herein. In some embodiments, an ink described herein is a composite ink. Such a composite ink, in some cases, comprises an optically transparent or substantially transparent carrier ink comprising a curable material; and a colorant dispersed in the carrier ink in an amount of about 0.01 to 5 weight %, based on the total weight of the composite ink.

Inks for 3D printing

In one aspect, methods of printing a three-dimensional article are described herein. In some embodiments, a method described herein comprises jetting an ink at a temperature T1 onto a substrate at a temperature T2 to form a layer of the ink on the substrate. The method further comprises subsequently curing the layer of the ink. In some embodiments, T1 is greater than T2 and the ink in an uncured state has a liquid-gel transition temperature below T1 and above T2. Further, the layer of the ink is deposited on the substrate at a rate R1 in mg/s/inthat is within 60% of a gelation rate R2 of the ink in inverse minutes in an uncured state at T2. The ink can comprise a curable material and a gellant.

Inks comprising gellants for 3D printing

A liquid ink transport assembly mitigates the migration of ink dye from one conduit in a plurality of conduits to another conduit in the plurality of conduits. The liquid ink transport assembly includes a plurality of conduits, each conduit in the plurality having a first end and a second end, the conduits in the plurality being arranged in a parallel configuration with at least one conduit being spatially separated from an adjacent conduit by a first distance that is greater than a second distance spatially separating other conduits in the plurality of conduits, and a heater, the plurality of conduits being positioned proximate to a first side of the heater to enable the heater to heat ink being carried between the first and the second ends of the plurality of conduits.

Heated ink delivery system

A composition that has a low volatile organic compound (VOC) content and methods for producing compositions having a low VOC content. The composition, such as a solid ink and/or toner release oil composition, may include less than about 0.15% by weight VOCs that have a sufficient vapor pressure at the operating temperature of printing device to enter the gas phase at the operating temperature of the printing device.

Polydisperse compositions and methods for eliminating volatile organic compounds

A solid ink includes an ink vehicle that is solid at room temperature, including a ketone wax and at least one resin selected from a branched amide resin, a branched urea resin, and a branched urethane resin, a colorant, and optional additives.

Solid inks containing ketone waxes and branched amides

Compositions, systems, and methods of printing an ink-jet image are provided. The composition can include a liquid vehicle including water, a liquid vehicle having from 5 wt % to 35 wt % of total organic solvent content; from 1 wt % to 6 wt % of acid-functionalized pigment solids; and from 0.001 wt % to 6 wt % of styrene-maleic anhydride copolymer, said styrene-maleic anhydride copolymer having a weight average molecular weight from about 400 Mw to 15,000 Mw.

Pigmented ink-jet inks with improved print quality and reliability

Disclosed is a phase change ink composition including an ink carrier and a colorant, said ink being suitable for use in an indirect printing process wherein the ink is jetted from a printhead onto a heated intermediate transfer member and subsequently transferred from the intermediate transfer member to a final recording substrate, wherein: (a) the ink exhibits the characteristic of being jetted from the printhead onto the intermediate transfer member when the ink at a temperature of about 125&#xb0; C. or lower; (b) the ink exhibits the characteristic of being jetted without purging from a printer maintained at a standby temperature of about 100&#xb0; C. or lower; and (c) the ink has a cohesive failure temperature of at least about 56&#xb0; C.

Phase change inks

The use of a styrene-maleic anhydride copolymer in self-dispersed black pigment inks provides a means of achieving black-to-color bleed control against color.

Use of styrene-maleic anhydride copolymer to control black-to-color bleed

Disclosed is a phase change ink comprising (a) a colorant and (b) a phase change ink carrier, said carrier comprising (i) a branched triamide and (ii) a polyethylene wax having an average peak molecular weight of from about 350 to about 730 and a polydispersity of from about 1.0001 to about 1.500. Also disclosed is a process which comprises (1) incorporating into an ink jet printing apparatus a phase change ink comprising (a) a colorant and (b) a phase change ink carrier, said carrier comprising (i) a branched triamide and (ii) a polyethylene wax having an average peak molecular weight of from about 350 to about 730 and a polydispersity of from about 1.0001 to about 1.500; (2) melting the ink; and (3) causing droplets of the melted ink to be ejected in an imagewise pattern onto a substrate.

Disclosed is a phase change ink comprising (a) a colorant and (b) a phase change ink carrier, said carrier comprising (i) an amide and (ii) a Fischer-Tropsch wax having an average peak molecular weight of from about 300 to about 800 and a polydispersity of from about 1.001 to about 3. Also disclosed is a process which comprises (1) incorporating into an ink jet printing apparatus a phase change ink comprising (a) a colorant and (b) a phase change ink carrier, said carrier comprising (i) an amide and (ii) a Fischer-Tropsch wax having an average peak molecular weight of from about 300 to about 800 and a polydispersity of from about 1.001 to about 3; (2) melting the ink; and (3) causing droplets of the melted ink to be ejected in an imagewise pattern onto a substrate.

Phase change inks containing Fischer-Tropsch waxes

The present invention is drawn to magenta dye blends and magenta ink-jet inks that can be used in ink sets for creating photo quality images. The dye blend can comprise a nickel-containing azo dye blended with a rhodamine dye at a 1:80 to 125:4 weight ratio.

Growing community of inventors

Salem, OR, United States of America

Patricia A Wang